开发过程中相信大家都有碰到因为不能捕获Home键而烦恼,现在终于有办法了,在Level5以上(包含)中,Activity类中有如下方法:
public void onAttachedToWindow ()
Since: API Level 5
Called when the main window associated with the activity has been attached to the window manager. See View.onAttachedToWindow() for more information.
See Also
* onAttachedToWindow()
复制代码
重写Activity中的onAttachedToWindow方法,设置Type,就能捕获到Home键。
public void onAttachedToWindow ()
Since: API Level 5
Called when the main window associated with the activity has been attached to the window manager. See View.onAttachedToWindow() for more information.
See Also
* onAttachedToWindow()
- private boolean catchHomeKey = false;
- @Override
- public void onAttachedToWindow() {
- // TODO Auto-generated method stub
- if(catchHomeKey) {
- this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
- }
- super.onAttachedToWindow();
- }
- @Override
- public boolean onKeyDown(int keyCode, KeyEvent event) {
- // TODO Auto-generated method stub
- if(keyCode == KeyEvent.KEYCODE_HOME) {
- Log.e(TAG, "Home key down");
- }
- return super.onKeyDown(keyCode, event);
- }
当不需要捕获时,删除setType这一行就OK。
我在重写HOME键事件的同时,设置不显示标题栏不好使。大家是否也有同样情况。
貌似重写onAttachedToWindow()方法的同时,要重写onDetachedFromWindow()方法。
解决办法: 在XML里面设置不显示标题栏
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
但是要用代码实现的话,应该怎么做。看了源码,但是看不出来调用的具体过程。